- Added true forms for some UR Cats
- Added new abilities to some characters
- Zombies now also attack Chapter 3 of the Empire of Cats (available after completing Chapter 3)
- Stories of Legend expansion:

- Some gacha units can evolve into a third form by using the evolution item Actinidia which can be obtained in the event stage, etc. It can be used to after clearing the Main Story Chapter 3.
- Added "Actinidia storage" button in storage.
- Added a new content "Gamatoto Expedition". You can earn a variety of items by using the expedition feature. It will be available in Chapter 1, after clearing Shiga Prefecture.
- Added a new item, "Cat's Eye": You can increase the upper limit of units level (Lv.30 or more) with the exception of some. Can be obtained in the Gamatoto expedition and will be available after the user rank 1600.
- Changed mechanism of cat food energy replenishment. Now will give energy equals to player's maximum energy. Previously, restoring from 200/400 would result 400/400, while now restoring from 200/400 would result in 600/400. The +200 energy is added as temporary energy, you will not regenerate any energy as long you have even a single point of temporary energy.
- Additional new and extra difficulty for existing Story of Legend stages and event stages.
- Cat Combo renovation. Cat Combo now will show all possible formations with units you currently have and unlocked forms.
- Player now can see the details of user rank rewards.
- Other bug fixes

- Added new game mode: "Into the Future"
- "Cat Combo" feature added: additional effects can be activated by combining a group of characters in the first 5 slots.
- Raised the upper limit of User Rank system
- Equip Slot expansion: by using Cat Food, up to 10 slots can be used
- Added new Legend stages
- Added new Event stages
- Added abilities to past characters
- Bug fixes

Ver 3.6.0 ~ 3.6.1

- Added option to "View storage" from main menu
- Increased the amount of EXP bought using catfood
- Changed rare gacha screen
- Adjusted Dom Cat (Special Cat) true form to single target
- Locked power-ups now will display original number currently owned instead the number -1
- Some bug fixes

- Story of Legend mode difficulty adjustment
- SoL mode up to alcatraz stage now have 3-star difficulty, later stages now have 2-star
- Adjustment for repeated clear reward and add display number of clear times
- new event stages
- Some bug fixed

Ver 3.3.0

-Added new event stage
-Added save data exchange feature from Android to iOS and vice-versa
-Implementation of true form for some of Special Cats units. Specific conditions or criteria required to meet.
-Fixed some bugs

Ver 3.2.0

- Added new event stage
- Added new legend stage
- Minor bug Fixes

Ver 3.1.1

- Bug Fixes

Ver 3.0.0

- User rank implemented (appears after the second chapter is cleared)
- New event stage
- New Legend Story stage
- New cat for Gacha
- Bug fixes

- Bug fixes
- Strengthen Moneko (reduced recharging time, now can do Critical damage)
- Added special effects for 'stopping' and 'slowing' abilities - there will be black icons below the affected unit- for 'stop' effect, it is a clock and for 'slow' it is a stick man with jagged lines in a circle around the stick figure.

- Add a new character for friend invitation
- It is now possible to have three sets of battle characters (After clearing chapter 3)
- Added the ability to see character details by double-tapping characters in "battle organization" screen
- Enhanced the strength of "Moneko"
- Some bug fixes

Ver 2.2.9

- Adding new characters
- Bug fixes
- June data

Ver 2.2.8

- Adding new characters
- Bug fixes

Ver 2.2.7

- Bug fixes

Ver 2.2.6

- Adding new characters and stages

Ver 2.2.5

- Adding new characters and stages

Ver 2.2.4

- Adding new characters
- Bug fixes
- Gacha switch is introduced in this version